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    Baryons in the plasma: in-medium effects and parity doubling


    Aarts, Gert and Allton, Chris and De Boni, Davide and Hands, Simon and Jager, Benjamin and Praki, Chrisanthi and Skullerud, Jon-Ivar (2018) Baryons in the plasma: in-medium effects and parity doubling. EPJ Web of Conferences, 171 (14005). ISSN 2100-014X

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    Abstract

    We investigate the fate of baryons made out of u, d and s quarks in the hadronic gas and the quark-gluon plasma, using nonperturbative lattice simulations, employing the FASTSUM anisotropic Nf = 2+1 ensembles. In the confined phase a strong temperature dependence is seen in the masses of the negative-parity groundstates, while the positiveparity groundstate masses are approximately temperature independent, within the error. At high temperature parity doubling emerges. A noticeable effect of the heavier s quark is seen. We give a simple description of the medium-dependent masses for the negativeparity states and speculate on the relevance for heavy-ion phenomenology via the hadron resonance gas.

    Item Type: Article
    Additional Information: © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/). Presented at Strangeness in Quark Matter, Utrecht, the Netherlands, 10-15 July 2017
    Keywords: Baryons; plasma; in-medium effects; parity doubling; nonperturbative lattice simulations;
    Academic Unit: Faculty of Science and Engineering > Theoretical Physics
    Item ID: 13326
    Identification Number: https://doi.org/10.1051/epjconf/201817114005
    Depositing User: Dr. Jonivar Skullerud
    Date Deposited: 30 Sep 2020 14:06
    Journal or Publication Title: EPJ Web of Conferences
    Publisher: EDP Sciences
    Refereed: Yes
    URI:

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